Date: Sat, 2 Jun 2007 20:13:17 +0800 From: hshh <hunreal@gmail.com> To: "Claus Guttesen" <kometen@gmail.com> Cc: freebsd-performance@freebsd.org Subject: Re: Bad performance while transfer large block size through NFS. Message-ID: <9b6b59500706020513x49cf8aecucf8393a98e478221@mail.gmail.com> In-Reply-To: <b41c75520706010403x8b57f1ao39aacbcbfa4ff4b5@mail.gmail.com> References: <9b6b59500706010310h145a1804ie97e57aa0c5e90a4@mail.gmail.com> <b41c75520706010403x8b57f1ao39aacbcbfa4ff4b5@mail.gmail.com>
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I tried, but not help. Still only 3798612 bytes/sec while block size is 2MBytes. On 6/1/07, Claus Guttesen <kometen@gmail.com> wrote: > > I set up one NFS server, and mounted on other server by TCP. Servers > > connected with Giga network, and running 6.2-RELEASE. > > > > But I found the performance is very bad while transfering large block size data. > > For example, I use dd on NFS client to test the speed. > > And ``systat -vm 1'' is displayed HDD is most busy, > > Disks da0 > > KB/t 16.00 > > tps 239 > > MB/s 3.73 > > % busy 91 > > > > Can I do some tuning to improve large block size transfer over NFS? > > Try adding read- and write-size 32768, partial /etc/fstab: > > rw,intr,nfsv3,-a=4,-w=32768,-r=32768 > > or adding -r 32768 -w 32768 while mounting from command line. > > -- > regards > Claus > > When lenity and cruelty play for a kingdom, > the gentlest gamester is the soonest winner. > > Shakespeare >
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